./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 2796c466e7d8363340777400f1e90c0fc7eb53096f49ded0fb8aa6814bf1ef21 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:57:53,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:57:53,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:57:53,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:57:53,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:57:53,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:57:53,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:57:53,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:57:53,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:57:53,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:57:53,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:57:53,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:57:53,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:57:53,836 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:57:53,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:57:53,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:57:53,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:57:53,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:57:53,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:57:53,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:57:53,855 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:57:53,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:57:53,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:57:53,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:57:53,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:57:53,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:57:53,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:57:53,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:57:53,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:57:53,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:57:53,868 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:57:53,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:57:53,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:57:53,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:57:53,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:57:53,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:57:53,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:57:53,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:57:53,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:57:53,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:57:53,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:57:53,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:57:53,876 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:57:53,897 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:57:53,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:57:53,897 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:57:53,898 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:57:53,898 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:57:53,898 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:57:53,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:57:53,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:57:53,899 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:57:53,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:57:53,899 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:57:53,900 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:57:53,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:57:53,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:57:53,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:57:53,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:57:53,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:57:53,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:57:53,900 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:57:53,901 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:57:53,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:57:53,901 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:57:53,901 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:57:53,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:57:53,901 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:57:53,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:57:53,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:57:53,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:57:53,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:57:53,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:57:53,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:57:53,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:57:53,902 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:57:53,903 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:57:53,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:57:53,903 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2796c466e7d8363340777400f1e90c0fc7eb53096f49ded0fb8aa6814bf1ef21 [2022-04-18 15:57:54,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:57:54,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:57:54,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:57:54,203 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:57:54,203 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:57:54,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-2.i [2022-04-18 15:57:54,254 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5690d69c/03ba9be69ff34bac8ba5263b269c48bb/FLAGbffd25fef [2022-04-18 15:57:54,730 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:57:54,731 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-2.i [2022-04-18 15:57:54,744 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5690d69c/03ba9be69ff34bac8ba5263b269c48bb/FLAGbffd25fef [2022-04-18 15:57:55,239 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5690d69c/03ba9be69ff34bac8ba5263b269c48bb [2022-04-18 15:57:55,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:57:55,243 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:57:55,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:57:55,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:57:55,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:57:55,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:57:55" (1/1) ... [2022-04-18 15:57:55,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42a12df0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:55, skipping insertion in model container [2022-04-18 15:57:55,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:57:55" (1/1) ... [2022-04-18 15:57:55,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:57:55,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:57:55,558 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-2.i[30035,30048] [2022-04-18 15:57:55,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:57:55,599 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:57:55,646 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-2.i[30035,30048] [2022-04-18 15:57:55,659 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:57:55,699 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:57:55,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:55 WrapperNode [2022-04-18 15:57:55,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:57:55,701 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:57:55,701 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:57:55,702 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:57:55,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:55" (1/1) ... [2022-04-18 15:57:55,734 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:55" (1/1) ... [2022-04-18 15:57:55,763 INFO L137 Inliner]: procedures = 170, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 83 [2022-04-18 15:57:55,764 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:57:55,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:57:55,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:57:55,765 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:57:55,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:55" (1/1) ... [2022-04-18 15:57:55,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:55" (1/1) ... [2022-04-18 15:57:55,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:55" (1/1) ... [2022-04-18 15:57:55,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:55" (1/1) ... [2022-04-18 15:57:55,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:55" (1/1) ... [2022-04-18 15:57:55,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:55" (1/1) ... [2022-04-18 15:57:55,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:55" (1/1) ... [2022-04-18 15:57:55,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:57:55,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:57:55,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:57:55,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:57:55,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:55" (1/1) ... [2022-04-18 15:57:55,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:57:55,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:57:55,830 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-18 15:57:55,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-18 15:57:55,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-04-18 15:57:55,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 15:57:55,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:57:55,856 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2022-04-18 15:57:55,858 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2022-04-18 15:57:55,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:57:55,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:57:55,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:57:55,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:57:55,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:57:55,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:57:55,862 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 15:57:55,959 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:57:55,960 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:57:56,171 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:57:56,178 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:57:56,179 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-04-18 15:57:56,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:57:56 BoogieIcfgContainer [2022-04-18 15:57:56,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:57:56,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:57:56,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:57:56,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:57:56,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:57:55" (1/3) ... [2022-04-18 15:57:56,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468d61cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:57:56, skipping insertion in model container [2022-04-18 15:57:56,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:55" (2/3) ... [2022-04-18 15:57:56,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468d61cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:57:56, skipping insertion in model container [2022-04-18 15:57:56,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:57:56" (3/3) ... [2022-04-18 15:57:56,189 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-array-2.i [2022-04-18 15:57:56,193 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:57:56,194 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:57:56,194 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-04-18 15:57:56,194 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:57:56,274 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-04-18 15:57:56,318 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:57:56,326 INFO L340 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 [2022-04-18 15:57:56,327 INFO L341 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-04-18 15:57:56,342 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 111 places, 115 transitions, 238 flow [2022-04-18 15:57:56,435 INFO L129 PetriNetUnfolder]: 12/164 cut-off events. [2022-04-18 15:57:56,435 INFO L130 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-04-18 15:57:56,440 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 164 events. 12/164 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 426 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 82. Up to 4 conditions per place. [2022-04-18 15:57:56,440 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 115 transitions, 238 flow [2022-04-18 15:57:56,447 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 115 transitions, 238 flow [2022-04-18 15:57:56,472 INFO L129 PetriNetUnfolder]: 4/63 cut-off events. [2022-04-18 15:57:56,473 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:57:56,474 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:56,474 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:56,475 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-04-18 15:57:56,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:56,482 INFO L85 PathProgramCache]: Analyzing trace with hash -462468970, now seen corresponding path program 1 times [2022-04-18 15:57:56,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:56,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976891700] [2022-04-18 15:57:56,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:56,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:56,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:56,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:56,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976891700] [2022-04-18 15:57:56,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976891700] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:56,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:56,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:56,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586388103] [2022-04-18 15:57:56,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:56,784 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:56,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:56,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:56,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:56,826 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 115 [2022-04-18 15:57:56,831 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 115 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:56,831 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:56,831 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 115 [2022-04-18 15:57:56,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:56,894 INFO L129 PetriNetUnfolder]: 3/152 cut-off events. [2022-04-18 15:57:56,895 INFO L130 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-04-18 15:57:56,896 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 152 events. 3/152 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 393 event pairs, 0 based on Foata normal form. 24/161 useless extension candidates. Maximal degree in co-relation 76. Up to 6 conditions per place. [2022-04-18 15:57:56,898 INFO L132 encePairwiseOnDemand]: 107/115 looper letters, 5 selfloop transitions, 2 changer transitions 1/108 dead transitions. [2022-04-18 15:57:56,898 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 108 transitions, 238 flow [2022-04-18 15:57:56,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:56,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:56,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 320 transitions. [2022-04-18 15:57:56,917 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.927536231884058 [2022-04-18 15:57:56,918 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 320 transitions. [2022-04-18 15:57:56,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 320 transitions. [2022-04-18 15:57:56,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:56,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 320 transitions. [2022-04-18 15:57:56,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:56,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:56,939 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:56,941 INFO L186 Difference]: Start difference. First operand has 111 places, 115 transitions, 238 flow. Second operand 3 states and 320 transitions. [2022-04-18 15:57:56,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 108 transitions, 238 flow [2022-04-18 15:57:56,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 108 transitions, 238 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:57:56,950 INFO L242 Difference]: Finished difference. Result has 111 places, 107 transitions, 226 flow [2022-04-18 15:57:56,952 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=111, PETRI_TRANSITIONS=107} [2022-04-18 15:57:56,956 INFO L335 CegarLoopForPetriNet]: 111 programPoint places, 0 predicate places. [2022-04-18 15:57:56,956 INFO L478 AbstractCegarLoop]: Abstraction has has 111 places, 107 transitions, 226 flow [2022-04-18 15:57:56,956 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:56,957 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:56,957 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:56,957 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:57:56,958 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-04-18 15:57:56,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:56,959 INFO L85 PathProgramCache]: Analyzing trace with hash 2041175467, now seen corresponding path program 1 times [2022-04-18 15:57:56,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:56,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535641707] [2022-04-18 15:57:56,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:56,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:57,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:57,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:57,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535641707] [2022-04-18 15:57:57,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535641707] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:57,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:57,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:57:57,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861496867] [2022-04-18 15:57:57,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:57,086 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-18 15:57:57,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:57,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-18 15:57:57,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-18 15:57:57,088 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 115 [2022-04-18 15:57:57,089 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 107 transitions, 226 flow. Second operand has 5 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,089 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:57,089 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 115 [2022-04-18 15:57:57,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:57,248 INFO L129 PetriNetUnfolder]: 2/168 cut-off events. [2022-04-18 15:57:57,249 INFO L130 PetriNetUnfolder]: For 21/56 co-relation queries the response was YES. [2022-04-18 15:57:57,249 INFO L84 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 168 events. 2/168 cut-off events. For 21/56 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 240 event pairs, 0 based on Foata normal form. 2/155 useless extension candidates. Maximal degree in co-relation 151. Up to 31 conditions per place. [2022-04-18 15:57:57,250 INFO L132 encePairwiseOnDemand]: 104/115 looper letters, 50 selfloop transitions, 7 changer transitions 6/134 dead transitions. [2022-04-18 15:57:57,251 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 134 transitions, 406 flow [2022-04-18 15:57:57,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-18 15:57:57,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-04-18 15:57:57,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 357 transitions. [2022-04-18 15:57:57,255 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7760869565217391 [2022-04-18 15:57:57,255 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 357 transitions. [2022-04-18 15:57:57,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 357 transitions. [2022-04-18 15:57:57,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:57,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 357 transitions. [2022-04-18 15:57:57,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,260 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,260 INFO L186 Difference]: Start difference. First operand has 111 places, 107 transitions, 226 flow. Second operand 4 states and 357 transitions. [2022-04-18 15:57:57,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 134 transitions, 406 flow [2022-04-18 15:57:57,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 134 transitions, 402 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:57:57,266 INFO L242 Difference]: Finished difference. Result has 114 places, 110 transitions, 270 flow [2022-04-18 15:57:57,266 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=114, PETRI_TRANSITIONS=110} [2022-04-18 15:57:57,267 INFO L335 CegarLoopForPetriNet]: 111 programPoint places, 3 predicate places. [2022-04-18 15:57:57,267 INFO L478 AbstractCegarLoop]: Abstraction has has 114 places, 110 transitions, 270 flow [2022-04-18 15:57:57,268 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,268 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:57,269 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:57,269 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 15:57:57,270 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-04-18 15:57:57,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:57,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1690400802, now seen corresponding path program 1 times [2022-04-18 15:57:57,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:57,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552044568] [2022-04-18 15:57:57,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:57,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:57:57,336 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:57:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:57:57,401 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:57:57,401 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:57:57,402 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-04-18 15:57:57,404 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2022-04-18 15:57:57,404 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2022-04-18 15:57:57,405 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2022-04-18 15:57:57,405 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2022-04-18 15:57:57,405 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2022-04-18 15:57:57,405 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2022-04-18 15:57:57,406 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2022-04-18 15:57:57,406 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2022-04-18 15:57:57,406 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 15:57:57,409 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-18 15:57:57,411 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:57:57,411 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 15:57:57,436 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-04-18 15:57:57,438 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:57:57,441 INFO L340 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 [2022-04-18 15:57:57,441 INFO L341 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-04-18 15:57:57,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 135 places, 138 transitions, 294 flow [2022-04-18 15:57:57,484 INFO L129 PetriNetUnfolder]: 23/293 cut-off events. [2022-04-18 15:57:57,484 INFO L130 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2022-04-18 15:57:57,485 INFO L84 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 293 events. 23/293 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 910 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 166. Up to 8 conditions per place. [2022-04-18 15:57:57,485 INFO L82 GeneralOperation]: Start removeDead. Operand has 135 places, 138 transitions, 294 flow [2022-04-18 15:57:57,487 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 138 transitions, 294 flow [2022-04-18 15:57:57,496 INFO L129 PetriNetUnfolder]: 4/62 cut-off events. [2022-04-18 15:57:57,496 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:57:57,496 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:57,496 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:57,497 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-04-18 15:57:57,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:57,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1469495648, now seen corresponding path program 1 times [2022-04-18 15:57:57,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:57,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256889635] [2022-04-18 15:57:57,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:57,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:57,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:57,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:57,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:57,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256889635] [2022-04-18 15:57:57,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256889635] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:57,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:57,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:57,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305827187] [2022-04-18 15:57:57,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:57,530 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:57,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:57,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:57,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:57,532 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 138 [2022-04-18 15:57:57,532 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 138 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:57,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 138 [2022-04-18 15:57:57,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:57,699 INFO L129 PetriNetUnfolder]: 76/987 cut-off events. [2022-04-18 15:57:57,699 INFO L130 PetriNetUnfolder]: For 120/140 co-relation queries the response was YES. [2022-04-18 15:57:57,705 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1175 conditions, 987 events. 76/987 cut-off events. For 120/140 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 6284 event pairs, 21 based on Foata normal form. 243/1105 useless extension candidates. Maximal degree in co-relation 528. Up to 88 conditions per place. [2022-04-18 15:57:57,710 INFO L132 encePairwiseOnDemand]: 125/138 looper letters, 23 selfloop transitions, 6 changer transitions 1/145 dead transitions. [2022-04-18 15:57:57,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 145 transitions, 377 flow [2022-04-18 15:57:57,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:57,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:57,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2022-04-18 15:57:57,711 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9371980676328503 [2022-04-18 15:57:57,711 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2022-04-18 15:57:57,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2022-04-18 15:57:57,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:57,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2022-04-18 15:57:57,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,714 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,714 INFO L186 Difference]: Start difference. First operand has 135 places, 138 transitions, 294 flow. Second operand 3 states and 388 transitions. [2022-04-18 15:57:57,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 145 transitions, 377 flow [2022-04-18 15:57:57,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 145 transitions, 377 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:57:57,718 INFO L242 Difference]: Finished difference. Result has 138 places, 137 transitions, 332 flow [2022-04-18 15:57:57,718 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=332, PETRI_PLACES=138, PETRI_TRANSITIONS=137} [2022-04-18 15:57:57,719 INFO L335 CegarLoopForPetriNet]: 135 programPoint places, 3 predicate places. [2022-04-18 15:57:57,719 INFO L478 AbstractCegarLoop]: Abstraction has has 138 places, 137 transitions, 332 flow [2022-04-18 15:57:57,720 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,720 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:57,720 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:57,720 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 15:57:57,720 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-04-18 15:57:57,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:57,721 INFO L85 PathProgramCache]: Analyzing trace with hash 868079275, now seen corresponding path program 1 times [2022-04-18 15:57:57,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:57,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685369896] [2022-04-18 15:57:57,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:57,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:57,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:57,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:57,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685369896] [2022-04-18 15:57:57,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685369896] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:57,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:57,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:57:57,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98285204] [2022-04-18 15:57:57,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:57,770 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-18 15:57:57,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:57,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-18 15:57:57,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-18 15:57:57,772 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 138 [2022-04-18 15:57:57,772 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 137 transitions, 332 flow. Second operand has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,772 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:57,773 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 138 [2022-04-18 15:57:57,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:57,953 INFO L129 PetriNetUnfolder]: 21/804 cut-off events. [2022-04-18 15:57:57,954 INFO L130 PetriNetUnfolder]: For 170/433 co-relation queries the response was YES. [2022-04-18 15:57:57,958 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1203 conditions, 804 events. 21/804 cut-off events. For 170/433 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4763 event pairs, 3 based on Foata normal form. 14/730 useless extension candidates. Maximal degree in co-relation 661. Up to 195 conditions per place. [2022-04-18 15:57:57,961 INFO L132 encePairwiseOnDemand]: 127/138 looper letters, 60 selfloop transitions, 8 changer transitions 3/170 dead transitions. [2022-04-18 15:57:57,961 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 170 transitions, 546 flow [2022-04-18 15:57:57,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-18 15:57:57,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-04-18 15:57:57,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 449 transitions. [2022-04-18 15:57:57,963 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8134057971014492 [2022-04-18 15:57:57,963 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 449 transitions. [2022-04-18 15:57:57,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 449 transitions. [2022-04-18 15:57:57,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:57,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 449 transitions. [2022-04-18 15:57:57,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,966 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,966 INFO L186 Difference]: Start difference. First operand has 138 places, 137 transitions, 332 flow. Second operand 4 states and 449 transitions. [2022-04-18 15:57:57,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 170 transitions, 546 flow [2022-04-18 15:57:57,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 170 transitions, 534 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:57:57,970 INFO L242 Difference]: Finished difference. Result has 141 places, 143 transitions, 382 flow [2022-04-18 15:57:57,971 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=382, PETRI_PLACES=141, PETRI_TRANSITIONS=143} [2022-04-18 15:57:57,971 INFO L335 CegarLoopForPetriNet]: 135 programPoint places, 6 predicate places. [2022-04-18 15:57:57,972 INFO L478 AbstractCegarLoop]: Abstraction has has 141 places, 143 transitions, 382 flow [2022-04-18 15:57:57,972 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,972 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:57,972 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:57,972 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 15:57:57,972 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-04-18 15:57:57,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:57,973 INFO L85 PathProgramCache]: Analyzing trace with hash 199791653, now seen corresponding path program 1 times [2022-04-18 15:57:57,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:57,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753043299] [2022-04-18 15:57:57,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:57,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:58,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:58,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:58,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753043299] [2022-04-18 15:57:58,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753043299] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:58,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:58,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:57:58,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416961986] [2022-04-18 15:57:58,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:58,112 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:57:58,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:58,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:57:58,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:57:58,115 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 138 [2022-04-18 15:57:58,116 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 143 transitions, 382 flow. Second operand has 6 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:58,116 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:58,116 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 138 [2022-04-18 15:57:58,116 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:59,685 INFO L129 PetriNetUnfolder]: 3927/11366 cut-off events. [2022-04-18 15:57:59,686 INFO L130 PetriNetUnfolder]: For 391/406 co-relation queries the response was YES. [2022-04-18 15:57:59,718 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19467 conditions, 11366 events. 3927/11366 cut-off events. For 391/406 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 104985 event pairs, 1618 based on Foata normal form. 0/9959 useless extension candidates. Maximal degree in co-relation 11181. Up to 4733 conditions per place. [2022-04-18 15:57:59,790 INFO L132 encePairwiseOnDemand]: 119/138 looper letters, 95 selfloop transitions, 48 changer transitions 0/248 dead transitions. [2022-04-18 15:57:59,790 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 248 transitions, 910 flow [2022-04-18 15:57:59,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:57:59,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:57:59,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 708 transitions. [2022-04-18 15:57:59,793 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.855072463768116 [2022-04-18 15:57:59,793 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 708 transitions. [2022-04-18 15:57:59,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 708 transitions. [2022-04-18 15:57:59,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:59,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 708 transitions. [2022-04-18 15:57:59,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:59,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:59,797 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:59,797 INFO L186 Difference]: Start difference. First operand has 141 places, 143 transitions, 382 flow. Second operand 6 states and 708 transitions. [2022-04-18 15:57:59,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 248 transitions, 910 flow [2022-04-18 15:57:59,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 248 transitions, 908 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-04-18 15:57:59,806 INFO L242 Difference]: Finished difference. Result has 150 places, 192 transitions, 684 flow [2022-04-18 15:57:59,807 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=684, PETRI_PLACES=150, PETRI_TRANSITIONS=192} [2022-04-18 15:57:59,808 INFO L335 CegarLoopForPetriNet]: 135 programPoint places, 15 predicate places. [2022-04-18 15:57:59,808 INFO L478 AbstractCegarLoop]: Abstraction has has 150 places, 192 transitions, 684 flow [2022-04-18 15:57:59,808 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:59,808 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:59,809 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:59,809 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 15:57:59,809 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-04-18 15:57:59,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:59,810 INFO L85 PathProgramCache]: Analyzing trace with hash -329294290, now seen corresponding path program 1 times [2022-04-18 15:57:59,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:59,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171219373] [2022-04-18 15:57:59,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:59,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:59,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-18 15:57:59,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:59,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171219373] [2022-04-18 15:57:59,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171219373] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:59,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:59,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:57:59,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518458763] [2022-04-18 15:57:59,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:59,899 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:57:59,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:59,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:57:59,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:57:59,900 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 138 [2022-04-18 15:57:59,901 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 192 transitions, 684 flow. Second operand has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:59,901 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:59,901 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 138 [2022-04-18 15:57:59,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:58:02,629 INFO L129 PetriNetUnfolder]: 7809/21143 cut-off events. [2022-04-18 15:58:02,629 INFO L130 PetriNetUnfolder]: For 10158/10326 co-relation queries the response was YES. [2022-04-18 15:58:02,719 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49556 conditions, 21143 events. 7809/21143 cut-off events. For 10158/10326 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 219486 event pairs, 3704 based on Foata normal form. 62/19238 useless extension candidates. Maximal degree in co-relation 43010. Up to 12399 conditions per place. [2022-04-18 15:58:02,820 INFO L132 encePairwiseOnDemand]: 123/138 looper letters, 120 selfloop transitions, 72 changer transitions 0/282 dead transitions. [2022-04-18 15:58:02,820 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 282 transitions, 1480 flow [2022-04-18 15:58:02,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:58:02,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:58:02,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 594 transitions. [2022-04-18 15:58:02,823 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.717391304347826 [2022-04-18 15:58:02,825 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 594 transitions. [2022-04-18 15:58:02,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 594 transitions. [2022-04-18 15:58:02,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:58:02,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 594 transitions. [2022-04-18 15:58:02,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:02,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:02,829 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:02,829 INFO L186 Difference]: Start difference. First operand has 150 places, 192 transitions, 684 flow. Second operand 6 states and 594 transitions. [2022-04-18 15:58:02,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 282 transitions, 1480 flow [2022-04-18 15:58:02,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 282 transitions, 1480 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:58:02,871 INFO L242 Difference]: Finished difference. Result has 160 places, 259 transitions, 1362 flow [2022-04-18 15:58:02,871 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1362, PETRI_PLACES=160, PETRI_TRANSITIONS=259} [2022-04-18 15:58:02,872 INFO L335 CegarLoopForPetriNet]: 135 programPoint places, 25 predicate places. [2022-04-18 15:58:02,873 INFO L478 AbstractCegarLoop]: Abstraction has has 160 places, 259 transitions, 1362 flow [2022-04-18 15:58:02,874 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:02,875 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:58:02,875 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:58:02,875 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 15:58:02,875 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-04-18 15:58:02,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:58:02,876 INFO L85 PathProgramCache]: Analyzing trace with hash 202802194, now seen corresponding path program 1 times [2022-04-18 15:58:02,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:58:02,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313759675] [2022-04-18 15:58:02,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:58:02,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:58:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:58:02,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:58:02,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:58:02,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313759675] [2022-04-18 15:58:02,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313759675] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:58:02,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:58:02,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:58:02,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22327352] [2022-04-18 15:58:02,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:58:02,935 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:58:02,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:58:02,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:58:02,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:58:02,936 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 138 [2022-04-18 15:58:02,937 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 259 transitions, 1362 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:02,937 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:58:02,937 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 138 [2022-04-18 15:58:02,937 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:58:04,065 INFO L129 PetriNetUnfolder]: 2461/9937 cut-off events. [2022-04-18 15:58:04,065 INFO L130 PetriNetUnfolder]: For 5056/5430 co-relation queries the response was YES. [2022-04-18 15:58:04,114 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22320 conditions, 9937 events. 2461/9937 cut-off events. For 5056/5430 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 104683 event pairs, 339 based on Foata normal form. 19/9106 useless extension candidates. Maximal degree in co-relation 19328. Up to 1792 conditions per place. [2022-04-18 15:58:04,155 INFO L132 encePairwiseOnDemand]: 132/138 looper letters, 29 selfloop transitions, 7 changer transitions 0/271 dead transitions. [2022-04-18 15:58:04,155 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 271 transitions, 1478 flow [2022-04-18 15:58:04,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:58:04,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:58:04,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 371 transitions. [2022-04-18 15:58:04,157 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8961352657004831 [2022-04-18 15:58:04,157 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 371 transitions. [2022-04-18 15:58:04,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 371 transitions. [2022-04-18 15:58:04,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:58:04,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 371 transitions. [2022-04-18 15:58:04,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:04,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:04,161 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:04,161 INFO L186 Difference]: Start difference. First operand has 160 places, 259 transitions, 1362 flow. Second operand 3 states and 371 transitions. [2022-04-18 15:58:04,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 271 transitions, 1478 flow [2022-04-18 15:58:04,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 271 transitions, 1454 flow, removed 12 selfloop flow, removed 0 redundant places. [2022-04-18 15:58:04,200 INFO L242 Difference]: Finished difference. Result has 164 places, 264 transitions, 1394 flow [2022-04-18 15:58:04,200 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=1338, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1394, PETRI_PLACES=164, PETRI_TRANSITIONS=264} [2022-04-18 15:58:04,201 INFO L335 CegarLoopForPetriNet]: 135 programPoint places, 29 predicate places. [2022-04-18 15:58:04,202 INFO L478 AbstractCegarLoop]: Abstraction has has 164 places, 264 transitions, 1394 flow [2022-04-18 15:58:04,202 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:04,202 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:58:04,202 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:58:04,203 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-18 15:58:04,203 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-04-18 15:58:04,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:58:04,203 INFO L85 PathProgramCache]: Analyzing trace with hash 707062480, now seen corresponding path program 1 times [2022-04-18 15:58:04,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:58:04,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043618091] [2022-04-18 15:58:04,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:58:04,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:58:04,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:58:04,237 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:58:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:58:04,270 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:58:04,270 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:58:04,272 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2022-04-18 15:58:04,272 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2022-04-18 15:58:04,273 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2022-04-18 15:58:04,273 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2022-04-18 15:58:04,273 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2022-04-18 15:58:04,273 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2022-04-18 15:58:04,273 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2022-04-18 15:58:04,274 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2022-04-18 15:58:04,274 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2022-04-18 15:58:04,274 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2022-04-18 15:58:04,274 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2022-04-18 15:58:04,274 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2022-04-18 15:58:04,275 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-18 15:58:04,275 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-04-18 15:58:04,276 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:58:04,276 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 15:58:04,311 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-04-18 15:58:04,312 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:58:04,317 INFO L340 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 [2022-04-18 15:58:04,317 INFO L341 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-04-18 15:58:04,322 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 159 places, 161 transitions, 352 flow [2022-04-18 15:58:04,388 INFO L129 PetriNetUnfolder]: 45/519 cut-off events. [2022-04-18 15:58:04,389 INFO L130 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2022-04-18 15:58:04,391 INFO L84 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 519 events. 45/519 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1963 event pairs, 1 based on Foata normal form. 0/445 useless extension candidates. Maximal degree in co-relation 301. Up to 16 conditions per place. [2022-04-18 15:58:04,392 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 161 transitions, 352 flow [2022-04-18 15:58:04,397 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 161 transitions, 352 flow [2022-04-18 15:58:04,401 INFO L129 PetriNetUnfolder]: 4/62 cut-off events. [2022-04-18 15:58:04,402 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:58:04,402 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:58:04,402 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:58:04,402 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-04-18 15:58:04,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:58:04,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1928681673, now seen corresponding path program 1 times [2022-04-18 15:58:04,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:58:04,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494978606] [2022-04-18 15:58:04,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:58:04,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:58:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:58:04,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:58:04,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:58:04,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494978606] [2022-04-18 15:58:04,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494978606] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:58:04,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:58:04,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:58:04,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077463274] [2022-04-18 15:58:04,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:58:04,432 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:58:04,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:58:04,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:58:04,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:58:04,433 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 161 [2022-04-18 15:58:04,434 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 161 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:04,434 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:58:04,434 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 161 [2022-04-18 15:58:04,434 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:58:05,657 INFO L129 PetriNetUnfolder]: 1329/8445 cut-off events. [2022-04-18 15:58:05,657 INFO L130 PetriNetUnfolder]: For 1512/1819 co-relation queries the response was YES. [2022-04-18 15:58:05,700 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10980 conditions, 8445 events. 1329/8445 cut-off events. For 1512/1819 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 96923 event pairs, 536 based on Foata normal form. 2381/9599 useless extension candidates. Maximal degree in co-relation 7974. Up to 1145 conditions per place. [2022-04-18 15:58:05,746 INFO L132 encePairwiseOnDemand]: 144/161 looper letters, 35 selfloop transitions, 9 changer transitions 1/175 dead transitions. [2022-04-18 15:58:05,746 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 175 transitions, 489 flow [2022-04-18 15:58:05,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:58:05,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:58:05,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2022-04-18 15:58:05,748 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9296066252587992 [2022-04-18 15:58:05,748 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2022-04-18 15:58:05,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2022-04-18 15:58:05,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:58:05,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2022-04-18 15:58:05,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:05,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:05,751 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:05,751 INFO L186 Difference]: Start difference. First operand has 159 places, 161 transitions, 352 flow. Second operand 3 states and 449 transitions. [2022-04-18 15:58:05,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 175 transitions, 489 flow [2022-04-18 15:58:05,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 175 transitions, 489 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:58:05,755 INFO L242 Difference]: Finished difference. Result has 162 places, 163 transitions, 416 flow [2022-04-18 15:58:05,756 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=416, PETRI_PLACES=162, PETRI_TRANSITIONS=163} [2022-04-18 15:58:05,756 INFO L335 CegarLoopForPetriNet]: 159 programPoint places, 3 predicate places. [2022-04-18 15:58:05,756 INFO L478 AbstractCegarLoop]: Abstraction has has 162 places, 163 transitions, 416 flow [2022-04-18 15:58:05,757 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:05,757 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:58:05,757 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:58:05,757 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-18 15:58:05,757 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-04-18 15:58:05,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:58:05,758 INFO L85 PathProgramCache]: Analyzing trace with hash -500532949, now seen corresponding path program 1 times [2022-04-18 15:58:05,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:58:05,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830596289] [2022-04-18 15:58:05,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:58:05,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:58:05,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:58:05,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:58:05,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:58:05,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830596289] [2022-04-18 15:58:05,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830596289] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:58:05,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:58:05,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:58:05,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714764634] [2022-04-18 15:58:05,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:58:05,803 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-18 15:58:05,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:58:05,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-18 15:58:05,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-18 15:58:05,804 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 161 [2022-04-18 15:58:05,805 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 163 transitions, 416 flow. Second operand has 5 states, 5 states have (on average 117.8) internal successors, (589), 5 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:05,805 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:58:05,805 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 161 [2022-04-18 15:58:05,806 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:58:06,517 INFO L129 PetriNetUnfolder]: 200/4517 cut-off events. [2022-04-18 15:58:06,517 INFO L130 PetriNetUnfolder]: For 799/2366 co-relation queries the response was YES. [2022-04-18 15:58:06,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6824 conditions, 4517 events. 200/4517 cut-off events. For 799/2366 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 47168 event pairs, 48 based on Foata normal form. 73/4074 useless extension candidates. Maximal degree in co-relation 4479. Up to 1166 conditions per place. [2022-04-18 15:58:06,570 INFO L132 encePairwiseOnDemand]: 150/161 looper letters, 63 selfloop transitions, 8 changer transitions 3/197 dead transitions. [2022-04-18 15:58:06,570 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 197 transitions, 641 flow [2022-04-18 15:58:06,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-18 15:58:06,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-04-18 15:58:06,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 536 transitions. [2022-04-18 15:58:06,572 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8322981366459627 [2022-04-18 15:58:06,573 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 536 transitions. [2022-04-18 15:58:06,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 536 transitions. [2022-04-18 15:58:06,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:58:06,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 536 transitions. [2022-04-18 15:58:06,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:06,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 161.0) internal successors, (805), 5 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:06,576 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 161.0) internal successors, (805), 5 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:06,576 INFO L186 Difference]: Start difference. First operand has 162 places, 163 transitions, 416 flow. Second operand 4 states and 536 transitions. [2022-04-18 15:58:06,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 197 transitions, 641 flow [2022-04-18 15:58:06,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 197 transitions, 623 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:58:06,581 INFO L242 Difference]: Finished difference. Result has 165 places, 169 transitions, 460 flow [2022-04-18 15:58:06,581 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=460, PETRI_PLACES=165, PETRI_TRANSITIONS=169} [2022-04-18 15:58:06,583 INFO L335 CegarLoopForPetriNet]: 159 programPoint places, 6 predicate places. [2022-04-18 15:58:06,584 INFO L478 AbstractCegarLoop]: Abstraction has has 165 places, 169 transitions, 460 flow [2022-04-18 15:58:06,584 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.8) internal successors, (589), 5 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:06,584 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:58:06,584 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:58:06,585 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-18 15:58:06,585 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-04-18 15:58:06,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:58:06,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1854835780, now seen corresponding path program 1 times [2022-04-18 15:58:06,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:58:06,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761030765] [2022-04-18 15:58:06,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:58:06,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:58:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:58:06,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:58:06,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:58:06,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761030765] [2022-04-18 15:58:06,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761030765] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:58:06,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:58:06,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:58:06,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130073826] [2022-04-18 15:58:06,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:58:06,683 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:58:06,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:58:06,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:58:06,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:58:06,684 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 161 [2022-04-18 15:58:06,685 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 169 transitions, 460 flow. Second operand has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:06,685 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:58:06,685 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 161 [2022-04-18 15:58:06,686 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:58:29,203 INFO L129 PetriNetUnfolder]: 98342/236496 cut-off events. [2022-04-18 15:58:29,203 INFO L130 PetriNetUnfolder]: For 9147/9289 co-relation queries the response was YES. [2022-04-18 15:58:30,272 INFO L84 FinitePrefix]: Finished finitePrefix Result has 409190 conditions, 236496 events. 98342/236496 cut-off events. For 9147/9289 co-relation queries the response was YES. Maximal size of possible extension queue 3567. Compared 3169361 event pairs, 44352 based on Foata normal form. 0/206885 useless extension candidates. Maximal degree in co-relation 350645. Up to 95001 conditions per place. [2022-04-18 15:58:31,381 INFO L132 encePairwiseOnDemand]: 138/161 looper letters, 130 selfloop transitions, 58 changer transitions 0/310 dead transitions. [2022-04-18 15:58:31,381 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 310 transitions, 1190 flow [2022-04-18 15:58:31,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:58:31,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:58:31,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 837 transitions. [2022-04-18 15:58:31,383 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8664596273291926 [2022-04-18 15:58:31,384 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 837 transitions. [2022-04-18 15:58:31,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 837 transitions. [2022-04-18 15:58:31,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:58:31,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 837 transitions. [2022-04-18 15:58:31,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 139.5) internal successors, (837), 6 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:31,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 161.0) internal successors, (1127), 7 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:31,389 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 161.0) internal successors, (1127), 7 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:31,389 INFO L186 Difference]: Start difference. First operand has 165 places, 169 transitions, 460 flow. Second operand 6 states and 837 transitions. [2022-04-18 15:58:31,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 310 transitions, 1190 flow [2022-04-18 15:58:31,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 310 transitions, 1188 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-04-18 15:58:31,641 INFO L242 Difference]: Finished difference. Result has 174 places, 229 transitions, 832 flow [2022-04-18 15:58:31,641 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=832, PETRI_PLACES=174, PETRI_TRANSITIONS=229} [2022-04-18 15:58:31,642 INFO L335 CegarLoopForPetriNet]: 159 programPoint places, 15 predicate places. [2022-04-18 15:58:31,642 INFO L478 AbstractCegarLoop]: Abstraction has has 174 places, 229 transitions, 832 flow [2022-04-18 15:58:31,643 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:31,643 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:58:31,643 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:58:31,643 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-18 15:58:31,643 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-04-18 15:58:31,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:58:31,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1530286941, now seen corresponding path program 1 times [2022-04-18 15:58:31,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:58:31,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340343607] [2022-04-18 15:58:31,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:58:31,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:58:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:58:31,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-18 15:58:31,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:58:31,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340343607] [2022-04-18 15:58:31,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340343607] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:58:31,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:58:31,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:58:31,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501679143] [2022-04-18 15:58:31,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:58:31,722 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:58:31,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:58:31,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:58:31,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:58:31,724 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 161 [2022-04-18 15:58:31,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 229 transitions, 832 flow. Second operand has 6 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:31,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:58:31,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 161 [2022-04-18 15:58:31,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand