./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-dist.wvr.c --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/weaver/mult-dist.wvr.c -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 c22a326532494b0b5126a81d8882f3e958ed0a5a46e6da0f77df1a4da18ba846 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 16:33:49,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 16:33:49,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 16:33:49,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 16:33:49,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 16:33:49,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 16:33:49,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 16:33:49,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 16:33:49,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 16:33:49,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 16:33:49,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 16:33:49,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 16:33:49,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 16:33:49,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 16:33:49,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 16:33:49,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 16:33:49,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 16:33:49,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 16:33:49,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 16:33:49,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 16:33:49,724 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 16:33:49,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 16:33:49,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 16:33:49,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 16:33:49,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 16:33:49,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 16:33:49,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 16:33:49,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 16:33:49,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 16:33:49,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 16:33:49,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 16:33:49,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 16:33:49,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 16:33:49,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 16:33:49,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 16:33:49,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 16:33:49,742 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 16:33:49,743 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 16:33:49,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 16:33:49,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 16:33:49,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 16:33:49,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 16:33:49,747 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 16:33:49,777 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 16:33:49,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 16:33:49,778 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 16:33:49,779 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 16:33:49,779 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 16:33:49,779 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 16:33:49,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 16:33:49,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 16:33:49,780 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 16:33:49,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 16:33:49,781 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 16:33:49,782 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 16:33:49,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 16:33:49,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 16:33:49,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 16:33:49,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 16:33:49,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 16:33:49,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 16:33:49,783 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 16:33:49,784 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 16:33:49,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 16:33:49,784 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 16:33:49,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 16:33:49,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 16:33:49,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 16:33:49,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 16:33:49,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 16:33:49,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 16:33:49,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 16:33:49,786 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 16:33:49,786 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 16:33:49,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 16:33:49,786 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 16:33:49,786 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 16:33:49,787 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 16:33:49,787 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c22a326532494b0b5126a81d8882f3e958ed0a5a46e6da0f77df1a4da18ba846 [2022-04-18 16:33:50,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 16:33:50,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 16:33:50,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 16:33:50,038 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 16:33:50,039 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 16:33:50,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-dist.wvr.c [2022-04-18 16:33:50,102 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29e60594f/41105d3e3fa346619565ba4e5eefb7c5/FLAG9367b2fba [2022-04-18 16:33:50,462 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 16:33:50,462 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-dist.wvr.c [2022-04-18 16:33:50,470 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29e60594f/41105d3e3fa346619565ba4e5eefb7c5/FLAG9367b2fba [2022-04-18 16:33:50,488 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29e60594f/41105d3e3fa346619565ba4e5eefb7c5 [2022-04-18 16:33:50,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 16:33:50,492 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 16:33:50,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 16:33:50,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 16:33:50,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 16:33:50,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:33:50" (1/1) ... [2022-04-18 16:33:50,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77c38802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:50, skipping insertion in model container [2022-04-18 16:33:50,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:33:50" (1/1) ... [2022-04-18 16:33:50,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 16:33:50,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 16:33:50,693 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-dist.wvr.c[2116,2129] [2022-04-18 16:33:50,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 16:33:50,712 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 16:33:50,736 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-dist.wvr.c[2116,2129] [2022-04-18 16:33:50,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 16:33:50,749 INFO L208 MainTranslator]: Completed translation [2022-04-18 16:33:50,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:50 WrapperNode [2022-04-18 16:33:50,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 16:33:50,751 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 16:33:50,751 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 16:33:50,751 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 16:33:50,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:50" (1/1) ... [2022-04-18 16:33:50,765 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:50" (1/1) ... [2022-04-18 16:33:50,784 INFO L137 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 103 [2022-04-18 16:33:50,784 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 16:33:50,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 16:33:50,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 16:33:50,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 16:33:50,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:50" (1/1) ... [2022-04-18 16:33:50,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:50" (1/1) ... [2022-04-18 16:33:50,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:50" (1/1) ... [2022-04-18 16:33:50,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:50" (1/1) ... [2022-04-18 16:33:50,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:50" (1/1) ... [2022-04-18 16:33:50,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:50" (1/1) ... [2022-04-18 16:33:50,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:50" (1/1) ... [2022-04-18 16:33:50,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 16:33:50,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 16:33:50,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 16:33:50,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 16:33:50,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:50" (1/1) ... [2022-04-18 16:33:50,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 16:33:50,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:33:50,841 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 16:33:50,846 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 16:33:50,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 16:33:50,871 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-04-18 16:33:50,871 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-04-18 16:33:50,872 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-04-18 16:33:50,872 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-04-18 16:33:50,872 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-04-18 16:33:50,872 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-04-18 16:33:50,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 16:33:50,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 16:33:50,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 16:33:50,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 16:33:50,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 16:33:50,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 16:33:50,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 16:33:50,874 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 16:33:50,982 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 16:33:50,984 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 16:33:51,260 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 16:33:51,269 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 16:33:51,269 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-04-18 16:33:51,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:33:51 BoogieIcfgContainer [2022-04-18 16:33:51,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 16:33:51,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 16:33:51,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 16:33:51,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 16:33:51,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 04:33:50" (1/3) ... [2022-04-18 16:33:51,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a86c4d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:33:51, skipping insertion in model container [2022-04-18 16:33:51,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:50" (2/3) ... [2022-04-18 16:33:51,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a86c4d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:33:51, skipping insertion in model container [2022-04-18 16:33:51,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:33:51" (3/3) ... [2022-04-18 16:33:51,280 INFO L111 eAbstractionObserver]: Analyzing ICFG mult-dist.wvr.c [2022-04-18 16:33:51,286 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 16:33:51,286 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 16:33:51,286 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-04-18 16:33:51,286 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 16:33:51,376 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-04-18 16:33:51,423 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 16:33:51,430 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 16:33:51,430 INFO L341 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-04-18 16:33:51,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 196 places, 193 transitions, 410 flow [2022-04-18 16:33:51,530 INFO L129 PetriNetUnfolder]: 7/190 cut-off events. [2022-04-18 16:33:51,530 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-04-18 16:33:51,539 INFO L84 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 190 events. 7/190 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 265 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 109. Up to 2 conditions per place. [2022-04-18 16:33:51,539 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 193 transitions, 410 flow [2022-04-18 16:33:51,548 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 170 transitions, 358 flow [2022-04-18 16:33:51,558 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2022-04-18 16:33:51,560 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 16:33:51,560 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:51,561 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] [2022-04-18 16:33:51,562 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-04-18 16:33:51,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:51,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1133528999, now seen corresponding path program 1 times [2022-04-18 16:33:51,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:51,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851480434] [2022-04-18 16:33:51,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:51,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:51,808 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 16:33:51,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:51,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851480434] [2022-04-18 16:33:51,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851480434] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:51,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:51,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:51,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880490347] [2022-04-18 16:33:51,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:51,820 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:51,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:51,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:51,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:51,864 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 193 [2022-04-18 16:33:51,870 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 170 transitions, 358 flow. Second operand has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 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 16:33:51,870 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:51,870 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 193 [2022-04-18 16:33:51,871 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:52,022 INFO L129 PetriNetUnfolder]: 34/401 cut-off events. [2022-04-18 16:33:52,023 INFO L130 PetriNetUnfolder]: For 38/68 co-relation queries the response was YES. [2022-04-18 16:33:52,029 INFO L84 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 401 events. 34/401 cut-off events. For 38/68 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1688 event pairs, 21 based on Foata normal form. 24/340 useless extension candidates. Maximal degree in co-relation 338. Up to 68 conditions per place. [2022-04-18 16:33:52,034 INFO L132 encePairwiseOnDemand]: 187/193 looper letters, 15 selfloop transitions, 2 changer transitions 0/166 dead transitions. [2022-04-18 16:33:52,034 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 166 transitions, 384 flow [2022-04-18 16:33:52,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:52,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:52,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 531 transitions. [2022-04-18 16:33:52,068 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.917098445595855 [2022-04-18 16:33:52,069 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 531 transitions. [2022-04-18 16:33:52,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 531 transitions. [2022-04-18 16:33:52,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:52,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 531 transitions. [2022-04-18 16:33:52,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 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 16:33:52,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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 16:33:52,092 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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 16:33:52,094 INFO L186 Difference]: Start difference. First operand has 174 places, 170 transitions, 358 flow. Second operand 3 states and 531 transitions. [2022-04-18 16:33:52,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 166 transitions, 384 flow [2022-04-18 16:33:52,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 166 transitions, 372 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-04-18 16:33:52,104 INFO L242 Difference]: Finished difference. Result has 169 places, 166 transitions, 342 flow [2022-04-18 16:33:52,106 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=169, PETRI_TRANSITIONS=166} [2022-04-18 16:33:52,114 INFO L335 CegarLoopForPetriNet]: 174 programPoint places, -5 predicate places. [2022-04-18 16:33:52,114 INFO L478 AbstractCegarLoop]: Abstraction has has 169 places, 166 transitions, 342 flow [2022-04-18 16:33:52,115 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 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 16:33:52,115 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:52,115 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] [2022-04-18 16:33:52,116 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 16:33:52,117 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-04-18 16:33:52,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:52,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1557356319, now seen corresponding path program 1 times [2022-04-18 16:33:52,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:52,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813281746] [2022-04-18 16:33:52,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:52,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:52,196 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 16:33:52,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:52,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813281746] [2022-04-18 16:33:52,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813281746] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:52,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:52,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:52,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640304450] [2022-04-18 16:33:52,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:52,203 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:52,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:52,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:52,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:52,207 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 193 [2022-04-18 16:33:52,207 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 166 transitions, 342 flow. Second operand has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 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 16:33:52,213 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:52,213 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 193 [2022-04-18 16:33:52,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:52,309 INFO L129 PetriNetUnfolder]: 58/483 cut-off events. [2022-04-18 16:33:52,310 INFO L130 PetriNetUnfolder]: For 21/31 co-relation queries the response was YES. [2022-04-18 16:33:52,314 INFO L84 FinitePrefix]: Finished finitePrefix Result has 596 conditions, 483 events. 58/483 cut-off events. For 21/31 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2329 event pairs, 39 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 563. Up to 101 conditions per place. [2022-04-18 16:33:52,317 INFO L132 encePairwiseOnDemand]: 190/193 looper letters, 15 selfloop transitions, 2 changer transitions 0/165 dead transitions. [2022-04-18 16:33:52,318 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 165 transitions, 374 flow [2022-04-18 16:33:52,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:52,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:52,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 528 transitions. [2022-04-18 16:33:52,320 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9119170984455959 [2022-04-18 16:33:52,320 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 528 transitions. [2022-04-18 16:33:52,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 528 transitions. [2022-04-18 16:33:52,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:52,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 528 transitions. [2022-04-18 16:33:52,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 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 16:33:52,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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 16:33:52,325 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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 16:33:52,325 INFO L186 Difference]: Start difference. First operand has 169 places, 166 transitions, 342 flow. Second operand 3 states and 528 transitions. [2022-04-18 16:33:52,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 165 transitions, 374 flow [2022-04-18 16:33:52,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 165 transitions, 370 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:52,334 INFO L242 Difference]: Finished difference. Result has 168 places, 165 transitions, 340 flow [2022-04-18 16:33:52,335 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=168, PETRI_TRANSITIONS=165} [2022-04-18 16:33:52,336 INFO L335 CegarLoopForPetriNet]: 174 programPoint places, -6 predicate places. [2022-04-18 16:33:52,336 INFO L478 AbstractCegarLoop]: Abstraction has has 168 places, 165 transitions, 340 flow [2022-04-18 16:33:52,337 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 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 16:33:52,337 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:52,337 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] [2022-04-18 16:33:52,337 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 16:33:52,338 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-04-18 16:33:52,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:52,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1214048674, now seen corresponding path program 1 times [2022-04-18 16:33:52,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:52,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629077996] [2022-04-18 16:33:52,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:52,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:52,403 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 16:33:52,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:52,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629077996] [2022-04-18 16:33:52,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629077996] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:52,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:52,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:52,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503844626] [2022-04-18 16:33:52,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:52,406 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:52,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:52,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:52,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:52,408 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 193 [2022-04-18 16:33:52,409 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 165 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 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 16:33:52,409 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:52,409 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 193 [2022-04-18 16:33:52,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:52,609 INFO L129 PetriNetUnfolder]: 222/1275 cut-off events. [2022-04-18 16:33:52,609 INFO L130 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-04-18 16:33:52,615 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1624 conditions, 1275 events. 222/1275 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 9260 event pairs, 135 based on Foata normal form. 0/978 useless extension candidates. Maximal degree in co-relation 1585. Up to 322 conditions per place. [2022-04-18 16:33:52,625 INFO L132 encePairwiseOnDemand]: 190/193 looper letters, 18 selfloop transitions, 2 changer transitions 0/164 dead transitions. [2022-04-18 16:33:52,625 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 164 transitions, 378 flow [2022-04-18 16:33:52,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:52,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:52,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 522 transitions. [2022-04-18 16:33:52,628 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9015544041450777 [2022-04-18 16:33:52,630 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 522 transitions. [2022-04-18 16:33:52,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 522 transitions. [2022-04-18 16:33:52,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:52,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 522 transitions. [2022-04-18 16:33:52,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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 16:33:52,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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 16:33:52,633 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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 16:33:52,634 INFO L186 Difference]: Start difference. First operand has 168 places, 165 transitions, 340 flow. Second operand 3 states and 522 transitions. [2022-04-18 16:33:52,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 164 transitions, 378 flow [2022-04-18 16:33:52,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 164 transitions, 374 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:52,640 INFO L242 Difference]: Finished difference. Result has 167 places, 164 transitions, 338 flow [2022-04-18 16:33:52,641 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=167, PETRI_TRANSITIONS=164} [2022-04-18 16:33:52,643 INFO L335 CegarLoopForPetriNet]: 174 programPoint places, -7 predicate places. [2022-04-18 16:33:52,643 INFO L478 AbstractCegarLoop]: Abstraction has has 167 places, 164 transitions, 338 flow [2022-04-18 16:33:52,643 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 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 16:33:52,644 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:52,644 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] [2022-04-18 16:33:52,644 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 16:33:52,644 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-04-18 16:33:52,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:52,645 INFO L85 PathProgramCache]: Analyzing trace with hash 240180713, now seen corresponding path program 1 times [2022-04-18 16:33:52,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:52,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081649818] [2022-04-18 16:33:52,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:52,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:52,702 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 16:33:52,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:52,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081649818] [2022-04-18 16:33:52,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081649818] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:52,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:52,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:52,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782344290] [2022-04-18 16:33:52,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:52,704 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:52,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:52,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:52,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:52,706 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 193 [2022-04-18 16:33:52,707 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 164 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 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 16:33:52,707 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:52,707 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 193 [2022-04-18 16:33:52,708 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:52,788 INFO L129 PetriNetUnfolder]: 23/322 cut-off events. [2022-04-18 16:33:52,788 INFO L130 PetriNetUnfolder]: For 7/13 co-relation queries the response was YES. [2022-04-18 16:33:52,791 INFO L84 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 322 events. 23/322 cut-off events. For 7/13 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1127 event pairs, 6 based on Foata normal form. 1/268 useless extension candidates. Maximal degree in co-relation 334. Up to 41 conditions per place. [2022-04-18 16:33:52,792 INFO L132 encePairwiseOnDemand]: 189/193 looper letters, 14 selfloop transitions, 2 changer transitions 0/166 dead transitions. [2022-04-18 16:33:52,793 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 166 transitions, 376 flow [2022-04-18 16:33:52,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:52,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:52,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 537 transitions. [2022-04-18 16:33:52,795 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.927461139896373 [2022-04-18 16:33:52,795 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 537 transitions. [2022-04-18 16:33:52,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 537 transitions. [2022-04-18 16:33:52,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:52,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 537 transitions. [2022-04-18 16:33:52,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 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 16:33:52,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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 16:33:52,813 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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 16:33:52,813 INFO L186 Difference]: Start difference. First operand has 167 places, 164 transitions, 338 flow. Second operand 3 states and 537 transitions. [2022-04-18 16:33:52,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 166 transitions, 376 flow [2022-04-18 16:33:52,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 166 transitions, 372 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:52,817 INFO L242 Difference]: Finished difference. Result has 166 places, 164 transitions, 344 flow [2022-04-18 16:33:52,817 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=166, PETRI_TRANSITIONS=164} [2022-04-18 16:33:52,818 INFO L335 CegarLoopForPetriNet]: 174 programPoint places, -8 predicate places. [2022-04-18 16:33:52,818 INFO L478 AbstractCegarLoop]: Abstraction has has 166 places, 164 transitions, 344 flow [2022-04-18 16:33:52,819 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 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 16:33:52,819 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:52,819 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] [2022-04-18 16:33:52,819 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 16:33:52,819 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-04-18 16:33:52,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:52,820 INFO L85 PathProgramCache]: Analyzing trace with hash -191447237, now seen corresponding path program 1 times [2022-04-18 16:33:52,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:52,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787476707] [2022-04-18 16:33:52,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:52,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:52,851 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 16:33:52,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:52,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787476707] [2022-04-18 16:33:52,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787476707] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:52,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:52,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:52,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130690413] [2022-04-18 16:33:52,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:52,853 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:52,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:52,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:52,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:52,855 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 193 [2022-04-18 16:33:52,856 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 164 transitions, 344 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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 16:33:52,856 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:52,856 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 193 [2022-04-18 16:33:52,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:52,933 INFO L129 PetriNetUnfolder]: 25/391 cut-off events. [2022-04-18 16:33:52,933 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-04-18 16:33:52,936 INFO L84 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 391 events. 25/391 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1898 event pairs, 4 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 377. Up to 23 conditions per place. [2022-04-18 16:33:52,937 INFO L132 encePairwiseOnDemand]: 188/193 looper letters, 12 selfloop transitions, 3 changer transitions 0/164 dead transitions. [2022-04-18 16:33:52,938 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 164 transitions, 376 flow [2022-04-18 16:33:52,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:52,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:52,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2022-04-18 16:33:52,940 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.92573402417962 [2022-04-18 16:33:52,940 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2022-04-18 16:33:52,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2022-04-18 16:33:52,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:52,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2022-04-18 16:33:52,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 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 16:33:52,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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 16:33:52,943 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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 16:33:52,944 INFO L186 Difference]: Start difference. First operand has 166 places, 164 transitions, 344 flow. Second operand 3 states and 536 transitions. [2022-04-18 16:33:52,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 164 transitions, 376 flow [2022-04-18 16:33:52,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 164 transitions, 376 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 16:33:52,947 INFO L242 Difference]: Finished difference. Result has 166 places, 162 transitions, 346 flow [2022-04-18 16:33:52,947 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=346, PETRI_PLACES=166, PETRI_TRANSITIONS=162} [2022-04-18 16:33:52,948 INFO L335 CegarLoopForPetriNet]: 174 programPoint places, -8 predicate places. [2022-04-18 16:33:52,948 INFO L478 AbstractCegarLoop]: Abstraction has has 166 places, 162 transitions, 346 flow [2022-04-18 16:33:52,949 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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 16:33:52,949 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:52,949 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] [2022-04-18 16:33:52,949 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 16:33:52,950 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-04-18 16:33:52,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:52,950 INFO L85 PathProgramCache]: Analyzing trace with hash 702813533, now seen corresponding path program 1 times [2022-04-18 16:33:52,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:52,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877224743] [2022-04-18 16:33:52,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:52,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:52,984 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 16:33:52,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:52,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877224743] [2022-04-18 16:33:52,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877224743] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:52,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:52,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:52,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075044367] [2022-04-18 16:33:52,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:52,986 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:52,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:52,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:52,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:52,988 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 193 [2022-04-18 16:33:52,989 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 162 transitions, 346 flow. Second operand has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 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 16:33:52,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:52,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 193 [2022-04-18 16:33:52,990 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:53,140 INFO L129 PetriNetUnfolder]: 121/958 cut-off events. [2022-04-18 16:33:53,141 INFO L130 PetriNetUnfolder]: For 22/25 co-relation queries the response was YES. [2022-04-18 16:33:53,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1196 conditions, 958 events. 121/958 cut-off events. For 22/25 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 6423 event pairs, 25 based on Foata normal form. 1/803 useless extension candidates. Maximal degree in co-relation 1004. Up to 166 conditions per place. [2022-04-18 16:33:53,154 INFO L132 encePairwiseOnDemand]: 187/193 looper letters, 19 selfloop transitions, 3 changer transitions 0/167 dead transitions. [2022-04-18 16:33:53,154 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 167 transitions, 405 flow [2022-04-18 16:33:53,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:53,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:53,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 535 transitions. [2022-04-18 16:33:53,157 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.924006908462867 [2022-04-18 16:33:53,157 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 535 transitions. [2022-04-18 16:33:53,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 535 transitions. [2022-04-18 16:33:53,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:53,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 535 transitions. [2022-04-18 16:33:53,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 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 16:33:53,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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 16:33:53,161 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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 16:33:53,161 INFO L186 Difference]: Start difference. First operand has 166 places, 162 transitions, 346 flow. Second operand 3 states and 535 transitions. [2022-04-18 16:33:53,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 167 transitions, 405 flow [2022-04-18 16:33:53,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 167 transitions, 399 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:53,166 INFO L242 Difference]: Finished difference. Result has 164 places, 162 transitions, 355 flow [2022-04-18 16:33:53,167 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=355, PETRI_PLACES=164, PETRI_TRANSITIONS=162} [2022-04-18 16:33:53,169 INFO L335 CegarLoopForPetriNet]: 174 programPoint places, -10 predicate places. [2022-04-18 16:33:53,170 INFO L478 AbstractCegarLoop]: Abstraction has has 164 places, 162 transitions, 355 flow [2022-04-18 16:33:53,171 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 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 16:33:53,171 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:53,171 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 16:33:53,172 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 16:33:53,172 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-04-18 16:33:53,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:53,174 INFO L85 PathProgramCache]: Analyzing trace with hash -923046858, now seen corresponding path program 1 times [2022-04-18 16:33:53,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:53,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061660612] [2022-04-18 16:33:53,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:53,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:53,215 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 16:33:53,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:53,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061660612] [2022-04-18 16:33:53,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061660612] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:53,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:53,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:53,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587285945] [2022-04-18 16:33:53,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:53,217 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:53,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:53,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:53,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:53,219 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 193 [2022-04-18 16:33:53,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 162 transitions, 355 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 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 16:33:53,220 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:53,220 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 193 [2022-04-18 16:33:53,220 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:53,291 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([467] L57-2-->L57-3: Formula: (= |v_#race~b~0_4| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_4|} AuxVars[] AssignedVars[#race~b~0][101], [Black: 220#true, 227#(= |#race~b~0| 0), 181#L49-1true, Black: 211#true, 213#(= |#race~a~0| 0), 102#L74-4true, 43#L57-3true, 176#L41-1true, 222#(= |#race~c~0| 0)]) [2022-04-18 16:33:53,291 INFO L384 tUnfolder$Statistics]: this new event has 80 ancestors and is cut-off event [2022-04-18 16:33:53,291 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-04-18 16:33:53,291 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-04-18 16:33:53,292 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-04-18 16:33:53,296 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([467] L57-2-->L57-3: Formula: (= |v_#race~b~0_4| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_4|} AuxVars[] AssignedVars[#race~b~0][101], [Black: 220#true, 227#(= |#race~b~0| 0), Black: 211#true, 213#(= |#race~a~0| 0), 102#L74-4true, 100#L49-2true, 43#L57-3true, 176#L41-1true, 222#(= |#race~c~0| 0)]) [2022-04-18 16:33:53,296 INFO L384 tUnfolder$Statistics]: this new event has 81 ancestors and is cut-off event [2022-04-18 16:33:53,296 INFO L387 tUnfolder$Statistics]: existing Event has 79 ancestors and is cut-off event [2022-04-18 16:33:53,296 INFO L387 tUnfolder$Statistics]: existing Event has 79 ancestors and is cut-off event [2022-04-18 16:33:53,296 INFO L387 tUnfolder$Statistics]: existing Event has 94 ancestors and is cut-off event [2022-04-18 16:33:53,337 INFO L129 PetriNetUnfolder]: 129/898 cut-off events. [2022-04-18 16:33:53,338 INFO L130 PetriNetUnfolder]: For 30/52 co-relation queries the response was YES. [2022-04-18 16:33:53,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1175 conditions, 898 events. 129/898 cut-off events. For 30/52 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 6131 event pairs, 24 based on Foata normal form. 2/770 useless extension candidates. Maximal degree in co-relation 919. Up to 152 conditions per place. [2022-04-18 16:33:53,347 INFO L132 encePairwiseOnDemand]: 189/193 looper letters, 14 selfloop transitions, 2 changer transitions 0/164 dead transitions. [2022-04-18 16:33:53,347 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 164 transitions, 393 flow [2022-04-18 16:33:53,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:53,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:53,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 537 transitions. [2022-04-18 16:33:53,350 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.927461139896373 [2022-04-18 16:33:53,350 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 537 transitions. [2022-04-18 16:33:53,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 537 transitions. [2022-04-18 16:33:53,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:53,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 537 transitions. [2022-04-18 16:33:53,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 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 16:33:53,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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 16:33:53,353 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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 16:33:53,353 INFO L186 Difference]: Start difference. First operand has 164 places, 162 transitions, 355 flow. Second operand 3 states and 537 transitions. [2022-04-18 16:33:53,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 164 transitions, 393 flow [2022-04-18 16:33:53,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 164 transitions, 393 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 16:33:53,357 INFO L242 Difference]: Finished difference. Result has 165 places, 162 transitions, 365 flow [2022-04-18 16:33:53,358 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=365, PETRI_PLACES=165, PETRI_TRANSITIONS=162} [2022-04-18 16:33:53,358 INFO L335 CegarLoopForPetriNet]: 174 programPoint places, -9 predicate places. [2022-04-18 16:33:53,358 INFO L478 AbstractCegarLoop]: Abstraction has has 165 places, 162 transitions, 365 flow [2022-04-18 16:33:53,360 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 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 16:33:53,360 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:53,360 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, 1, 1, 1] [2022-04-18 16:33:53,360 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 16:33:53,360 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-04-18 16:33:53,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:53,361 INFO L85 PathProgramCache]: Analyzing trace with hash -976796320, now seen corresponding path program 1 times [2022-04-18 16:33:53,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:53,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429013211] [2022-04-18 16:33:53,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:53,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:53,404 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 16:33:53,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:53,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429013211] [2022-04-18 16:33:53,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429013211] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:53,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:53,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:53,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366344279] [2022-04-18 16:33:53,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:53,406 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:53,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:53,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:53,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:53,408 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 193 [2022-04-18 16:33:53,408 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 162 transitions, 365 flow. Second operand has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 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 16:33:53,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:53,408 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 193 [2022-04-18 16:33:53,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:53,464 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([467] L57-2-->L57-3: Formula: (= |v_#race~b~0_4| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_4|} AuxVars[] AssignedVars[#race~b~0][99], [Black: 220#true, 227#(= |#race~b~0| 0), 181#L49-1true, Black: 225#true, Black: 211#true, 102#L74-4true, 213#(= |#race~a~0| 0), 43#L57-3true, 230#true, 176#L41-1true, 222#(= |#race~c~0| 0)]) [2022-04-18 16:33:53,465 INFO L384 tUnfolder$Statistics]: this new event has 80 ancestors and is cut-off event [2022-04-18 16:33:53,465 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-04-18 16:33:53,465 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-04-18 16:33:53,465 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-04-18 16:33:53,474 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([438] L49-7-->L49-1: Formula: (= |v_#race~b~0_1| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_1|} AuxVars[] AssignedVars[#race~b~0][103], [Black: 220#true, 227#(= |#race~b~0| 0), 181#L49-1true, Black: 225#true, Black: 211#true, 102#L74-4true, 213#(= |#race~a~0| 0), 43#L57-3true, 230#true, 176#L41-1true, 222#(= |#race~c~0| 0)]) [2022-04-18 16:33:53,474 INFO L384 tUnfolder$Statistics]: this new event has 95 ancestors and is cut-off event [2022-04-18 16:33:53,474 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-04-18 16:33:53,475 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-04-18 16:33:53,475 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-04-18 16:33:53,487 INFO L129 PetriNetUnfolder]: 68/553 cut-off events. [2022-04-18 16:33:53,487 INFO L130 PetriNetUnfolder]: For 8/10 co-relation queries the response was YES. [2022-04-18 16:33:53,492 INFO L84 FinitePrefix]: Finished finitePrefix Result has 742 conditions, 553 events. 68/553 cut-off events. For 8/10 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2997 event pairs, 17 based on Foata normal form. 0/483 useless extension candidates. Maximal degree in co-relation 560. Up to 46 conditions per place. [2022-04-18 16:33:53,496 INFO L132 encePairwiseOnDemand]: 190/193 looper letters, 14 selfloop transitions, 2 changer transitions 0/163 dead transitions. [2022-04-18 16:33:53,496 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 163 transitions, 401 flow [2022-04-18 16:33:53,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:53,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:53,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 530 transitions. [2022-04-18 16:33:53,499 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9153713298791019 [2022-04-18 16:33:53,499 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 530 transitions. [2022-04-18 16:33:53,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 530 transitions. [2022-04-18 16:33:53,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:53,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 530 transitions. [2022-04-18 16:33:53,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 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 16:33:53,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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 16:33:53,502 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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 16:33:53,502 INFO L186 Difference]: Start difference. First operand has 165 places, 162 transitions, 365 flow. Second operand 3 states and 530 transitions. [2022-04-18 16:33:53,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 163 transitions, 401 flow [2022-04-18 16:33:53,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 163 transitions, 401 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 16:33:53,506 INFO L242 Difference]: Finished difference. Result has 166 places, 161 transitions, 367 flow [2022-04-18 16:33:53,507 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=367, PETRI_PLACES=166, PETRI_TRANSITIONS=161} [2022-04-18 16:33:53,507 INFO L335 CegarLoopForPetriNet]: 174 programPoint places, -8 predicate places. [2022-04-18 16:33:53,508 INFO L478 AbstractCegarLoop]: Abstraction has has 166 places, 161 transitions, 367 flow [2022-04-18 16:33:53,508 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 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 16:33:53,508 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:53,508 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, 1, 1, 1] [2022-04-18 16:33:53,508 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-18 16:33:53,509 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-04-18 16:33:53,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:53,509 INFO L85 PathProgramCache]: Analyzing trace with hash -2107846938, now seen corresponding path program 1 times [2022-04-18 16:33:53,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:53,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061190563] [2022-04-18 16:33:53,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:53,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:53,539 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 16:33:53,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:53,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061190563] [2022-04-18 16:33:53,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061190563] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:53,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:53,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:53,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396523238] [2022-04-18 16:33:53,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:53,541 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:53,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:53,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:53,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:53,543 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 193 [2022-04-18 16:33:53,543 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 161 transitions, 367 flow. Second operand has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 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 16:33:53,548 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:53,548 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 193 [2022-04-18 16:33:53,549 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:53,614 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([467] L57-2-->L57-3: Formula: (= |v_#race~b~0_4| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_4|} AuxVars[] AssignedVars[#race~b~0][98], [Black: 220#true, 227#(= |#race~b~0| 0), 181#L49-1true, Black: 225#true, Black: 211#true, 213#(= |#race~a~0| 0), 102#L74-4true, 43#L57-3true, 234#true, 230#true, 176#L41-1true, 222#(= |#race~c~0| 0)]) [2022-04-18 16:33:53,614 INFO L384 tUnfolder$Statistics]: this new event has 80 ancestors and is cut-off event [2022-04-18 16:33:53,614 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-04-18 16:33:53,614 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-04-18 16:33:53,614 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-04-18 16:33:53,628 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([438] L49-7-->L49-1: Formula: (= |v_#race~b~0_1| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_1|} AuxVars[] AssignedVars[#race~b~0][102], [Black: 220#true, 227#(= |#race~b~0| 0), 181#L49-1true, Black: 225#true, Black: 211#true, 213#(= |#race~a~0| 0), 102#L74-4true, 43#L57-3true, 234#true, 230#true, 176#L41-1true, 222#(= |#race~c~0| 0)]) [2022-04-18 16:33:53,628 INFO L384 tUnfolder$Statistics]: this new event has 95 ancestors and is cut-off event [2022-04-18 16:33:53,629 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-04-18 16:33:53,629 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-04-18 16:33:53,629 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-04-18 16:33:53,652 INFO L129 PetriNetUnfolder]: 83/624 cut-off events. [2022-04-18 16:33:53,653 INFO L130 PetriNetUnfolder]: For 21/25 co-relation queries the response was YES. [2022-04-18 16:33:53,659 INFO L84 FinitePrefix]: Finished finitePrefix Result has 843 conditions, 624 events. 83/624 cut-off events. For 21/25 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3493 event pairs, 14 based on Foata normal form. 0/552 useless extension candidates. Maximal degree in co-relation 713. Up to 44 conditions per place. [2022-04-18 16:33:53,663 INFO L132 encePairwiseOnDemand]: 188/193 looper letters, 12 selfloop transitions, 3 changer transitions 0/161 dead transitions. [2022-04-18 16:33:53,664 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 161 transitions, 399 flow [2022-04-18 16:33:53,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:53,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:53,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2022-04-18 16:33:53,666 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.92573402417962 [2022-04-18 16:33:53,666 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2022-04-18 16:33:53,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2022-04-18 16:33:53,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:53,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2022-04-18 16:33:53,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 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 16:33:53,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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 16:33:53,670 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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 16:33:53,670 INFO L186 Difference]: Start difference. First operand has 166 places, 161 transitions, 367 flow. Second operand 3 states and 536 transitions. [2022-04-18 16:33:53,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 161 transitions, 399 flow [2022-04-18 16:33:53,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 161 transitions, 395 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:53,676 INFO L242 Difference]: Finished difference. Result has 164 places, 159 transitions, 365 flow [2022-04-18 16:33:53,676 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=365, PETRI_PLACES=164, PETRI_TRANSITIONS=159} [2022-04-18 16:33:53,677 INFO L335 CegarLoopForPetriNet]: 174 programPoint places, -10 predicate places. [2022-04-18 16:33:53,678 INFO L478 AbstractCegarLoop]: Abstraction has has 164 places, 159 transitions, 365 flow [2022-04-18 16:33:53,678 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 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 16:33:53,678 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:53,679 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:33:53,679 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-18 16:33:53,679 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-04-18 16:33:53,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:53,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1688302027, now seen corresponding path program 1 times [2022-04-18 16:33:53,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:53,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84718084] [2022-04-18 16:33:53,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:53,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:53,746 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 16:33:53,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:53,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84718084] [2022-04-18 16:33:53,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84718084] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:53,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:53,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:53,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419977658] [2022-04-18 16:33:53,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:53,754 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:53,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:53,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:53,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:53,757 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 193 [2022-04-18 16:33:53,758 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 159 transitions, 365 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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 16:33:53,758 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:53,758 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 193 [2022-04-18 16:33:53,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:53,824 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([467] L57-2-->L57-3: Formula: (= |v_#race~b~0_4| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_4|} AuxVars[] AssignedVars[#race~b~0][97], [Black: 220#true, 227#(= |#race~b~0| 0), Black: 225#true, 181#L49-1true, Black: 211#true, 213#(= |#race~a~0| 0), 102#L74-4true, 234#true, 43#L57-3true, 238#true, 176#L41-1true, 222#(= |#race~c~0| 0)]) [2022-04-18 16:33:53,824 INFO L384 tUnfolder$Statistics]: this new event has 80 ancestors and is cut-off event [2022-04-18 16:33:53,824 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-04-18 16:33:53,824 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-04-18 16:33:53,825 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-04-18 16:33:53,835 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([438] L49-7-->L49-1: Formula: (= |v_#race~b~0_1| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_1|} AuxVars[] AssignedVars[#race~b~0][101], [Black: 220#true, 227#(= |#race~b~0| 0), 181#L49-1true, Black: 225#true, Black: 211#true, 213#(= |#race~a~0| 0), 102#L74-4true, 234#true, 43#L57-3true, 238#true, 176#L41-1true, 222#(= |#race~c~0| 0)]) [2022-04-18 16:33:53,835 INFO L384 tUnfolder$Statistics]: this new event has 95 ancestors and is cut-off event [2022-04-18 16:33:53,836 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-04-18 16:33:53,836 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-04-18 16:33:53,836 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-04-18 16:33:53,854 INFO L129 PetriNetUnfolder]: 87/606 cut-off events. [2022-04-18 16:33:53,854 INFO L130 PetriNetUnfolder]: For 34/42 co-relation queries the response was YES. [2022-04-18 16:33:53,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 606 events. 87/606 cut-off events. For 34/42 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3345 event pairs, 22 based on Foata normal form. 0/540 useless extension candidates. Maximal degree in co-relation 669. Up to 66 conditions per place. [2022-04-18 16:33:53,864 INFO L132 encePairwiseOnDemand]: 190/193 looper letters, 14 selfloop transitions, 2 changer transitions 0/160 dead transitions. [2022-04-18 16:33:53,864 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 160 transitions, 401 flow [2022-04-18 16:33:53,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:53,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:53,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 530 transitions. [2022-04-18 16:33:53,867 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9153713298791019 [2022-04-18 16:33:53,867 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 530 transitions. [2022-04-18 16:33:53,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 530 transitions. [2022-04-18 16:33:53,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:53,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 530 transitions. [2022-04-18 16:33:53,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 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 16:33:53,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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 16:33:53,870 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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 16:33:53,870 INFO L186 Difference]: Start difference. First operand has 164 places, 159 transitions, 365 flow. Second operand 3 states and 530 transitions. [2022-04-18 16:33:53,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 160 transitions, 401 flow [2022-04-18 16:33:53,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 160 transitions, 395 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:53,874 INFO L242 Difference]: Finished difference. Result has 163 places, 158 transitions, 361 flow [2022-04-18 16:33:53,876 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=361, PETRI_PLACES=163, PETRI_TRANSITIONS=158} [2022-04-18 16:33:53,877 INFO L335 CegarLoopForPetriNet]: 174 programPoint places, -11 predicate places. [2022-04-18 16:33:53,877 INFO L478 AbstractCegarLoop]: Abstraction has has 163 places, 158 transitions, 361 flow [2022-04-18 16:33:53,877 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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 16:33:53,878 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:53,878 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:33:53,878 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-18 16:33:53,878 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-04-18 16:33:53,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:53,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1768984947, now seen corresponding path program 1 times [2022-04-18 16:33:53,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:53,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477697655] [2022-04-18 16:33:53,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:53,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:54,041 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 16:33:54,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:54,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477697655] [2022-04-18 16:33:54,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477697655] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:54,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:54,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 16:33:54,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013530093] [2022-04-18 16:33:54,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:54,044 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 16:33:54,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:54,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 16:33:54,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 16:33:54,046 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 193 [2022-04-18 16:33:54,047 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 158 transitions, 361 flow. Second operand has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:54,047 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:54,047 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 193 [2022-04-18 16:33:54,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:54,140 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([467] L57-2-->L57-3: Formula: (= |v_#race~b~0_4| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_4|} AuxVars[] AssignedVars[#race~b~0][97], [Black: 220#true, 227#(= |#race~b~0| 0), 181#L49-1true, Black: 225#true, Black: 211#true, 242#true, 213#(= |#race~a~0| 0), 102#L74-4true, 238#true, 43#L57-3true, 176#L41-1true, 222#(= |#race~c~0| 0)]) [2022-04-18 16:33:54,140 INFO L384 tUnfolder$Statistics]: this new event has 80 ancestors and is cut-off event [2022-04-18 16:33:54,140 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-04-18 16:33:54,141 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-04-18 16:33:54,141 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-04-18 16:33:54,169 INFO L129 PetriNetUnfolder]: 44/436 cut-off events. [2022-04-18 16:33:54,169 INFO L130 PetriNetUnfolder]: For 1/9 co-relation queries the response was YES. [2022-04-18 16:33:54,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 589 conditions, 436 events. 44/436 cut-off events. For 1/9 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2035 event pairs, 5 based on Foata normal form. 4/393 useless extension candidates. Maximal degree in co-relation 475. Up to 34 conditions per place. [2022-04-18 16:33:54,177 INFO L132 encePairwiseOnDemand]: 188/193 looper letters, 23 selfloop transitions, 4 changer transitions 0/157 dead transitions. [2022-04-18 16:33:54,177 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 157 transitions, 413 flow [2022-04-18 16:33:54,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 16:33:54,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 16:33:54,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 976 transitions. [2022-04-18 16:33:54,180 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.842832469775475 [2022-04-18 16:33:54,180 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 976 transitions. [2022-04-18 16:33:54,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 976 transitions. [2022-04-18 16:33:54,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:54,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 976 transitions. [2022-04-18 16:33:54,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 162.66666666666666) internal successors, (976), 6 states have internal predecessors, (976), 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 16:33:54,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 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 16:33:54,187 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 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 16:33:54,187 INFO L186 Difference]: Start difference. First operand has 163 places, 158 transitions, 361 flow. Second operand 6 states and 976 transitions. [2022-04-18 16:33:54,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 157 transitions, 413 flow [2022-04-18 16:33:54,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 157 transitions, 409 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:54,192 INFO L242 Difference]: Finished difference. Result has 165 places, 157 transitions, 363 flow [2022-04-18 16:33:54,192 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=363, PETRI_PLACES=165, PETRI_TRANSITIONS=157} [2022-04-18 16:33:54,194 INFO L335 CegarLoopForPetriNet]: 174 programPoint places, -9 predicate places. [2022-04-18 16:33:54,194 INFO L478 AbstractCegarLoop]: Abstraction has has 165 places, 157 transitions, 363 flow [2022-04-18 16:33:54,194 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:54,195 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:54,195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:33:54,195 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-18 16:33:54,195 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-04-18 16:33:54,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:54,196 INFO L85 PathProgramCache]: Analyzing trace with hash -657938527, now seen corresponding path program 1 times [2022-04-18 16:33:54,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:54,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942756187] [2022-04-18 16:33:54,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:54,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:54,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:54,230 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 16:33:54,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:54,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942756187] [2022-04-18 16:33:54,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942756187] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:54,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:54,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:54,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913988751] [2022-04-18 16:33:54,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:54,232 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:54,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:54,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:54,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:54,233 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 193 [2022-04-18 16:33:54,234 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 157 transitions, 363 flow. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 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 16:33:54,234 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:54,234 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 193 [2022-04-18 16:33:54,234 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:54,282 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([467] L57-2-->L57-3: Formula: (= |v_#race~b~0_4| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_4|} AuxVars[] AssignedVars[#race~b~0][97], [Black: 220#true, 227#(= |#race~b~0| 0), Black: 225#true, 181#L49-1true, Black: 211#true, 242#true, 213#(= |#race~a~0| 0), 102#L74-4true, 249#true, 43#L57-3true, 176#L41-1true, 222#(= |#race~c~0| 0)]) [2022-04-18 16:33:54,282 INFO L384 tUnfolder$Statistics]: this new event has 80 ancestors and is cut-off event [2022-04-18 16:33:54,283 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-04-18 16:33:54,283 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-04-18 16:33:54,283 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-04-18 16:33:54,309 INFO L129 PetriNetUnfolder]: 77/536 cut-off events. [2022-04-18 16:33:54,309 INFO L130 PetriNetUnfolder]: For 30/39 co-relation queries the response was YES. [2022-04-18 16:33:54,314 INFO L84 FinitePrefix]: Finished finitePrefix Result has 757 conditions, 536 events. 77/536 cut-off events. For 30/39 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2913 event pairs, 14 based on Foata normal form. 7/496 useless extension candidates. Maximal degree in co-relation 679. Up to 49 conditions per place. [2022-04-18 16:33:54,316 INFO L132 encePairwiseOnDemand]: 188/193 looper letters, 10 selfloop transitions, 2 changer transitions 7/157 dead transitions. [2022-04-18 16:33:54,316 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 157 transitions, 393 flow [2022-04-18 16:33:54,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:54,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:54,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 535 transitions. [2022-04-18 16:33:54,318 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.924006908462867 [2022-04-18 16:33:54,318 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 535 transitions. [2022-04-18 16:33:54,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 535 transitions. [2022-04-18 16:33:54,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:54,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 535 transitions. [2022-04-18 16:33:54,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 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 16:33:54,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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 16:33:54,321 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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 16:33:54,321 INFO L186 Difference]: Start difference. First operand has 165 places, 157 transitions, 363 flow. Second operand 3 states and 535 transitions. [2022-04-18 16:33:54,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 157 transitions, 393 flow [2022-04-18 16:33:54,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 157 transitions, 386 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-04-18 16:33:54,326 INFO L242 Difference]: Finished difference. Result has 161 places, 148 transitions, 341 flow [2022-04-18 16:33:54,327 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=341, PETRI_PLACES=161, PETRI_TRANSITIONS=148} [2022-04-18 16:33:54,329 INFO L335 CegarLoopForPetriNet]: 174 programPoint places, -13 predicate places. [2022-04-18 16:33:54,329 INFO L478 AbstractCegarLoop]: Abstraction has has 161 places, 148 transitions, 341 flow [2022-04-18 16:33:54,329 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 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 16:33:54,329 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:54,330 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:33:54,330 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-18 16:33:54,330 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-04-18 16:33:54,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:54,331 INFO L85 PathProgramCache]: Analyzing trace with hash 345281638, now seen corresponding path program 1 times [2022-04-18 16:33:54,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:54,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071043268] [2022-04-18 16:33:54,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:54,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:54,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:54,373 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 16:33:54,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:54,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071043268] [2022-04-18 16:33:54,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071043268] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:54,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:54,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:54,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714800699] [2022-04-18 16:33:54,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:54,378 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:54,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:54,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:54,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:54,379 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 193 [2022-04-18 16:33:54,380 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 148 transitions, 341 flow. Second operand has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 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 16:33:54,380 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:54,380 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 193 [2022-04-18 16:33:54,380 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:54,434 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([467] L57-2-->L57-3: Formula: (= |v_#race~b~0_4| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_4|} AuxVars[] AssignedVars[#race~b~0][97], [253#true, Black: 220#true, 227#(= |#race~b~0| 0), 181#L49-1true, Black: 225#true, Black: 211#true, 213#(= |#race~a~0| 0), 102#L74-4true, 249#true, 43#L57-3true, 176#L41-1true, 222#(= |#race~c~0| 0)]) [2022-04-18 16:33:54,434 INFO L384 tUnfolder$Statistics]: this new event has 80 ancestors and is cut-off event [2022-04-18 16:33:54,435 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-04-18 16:33:54,435 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-04-18 16:33:54,435 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-04-18 16:33:54,464 INFO L129 PetriNetUnfolder]: 75/559 cut-off events. [2022-04-18 16:33:54,464 INFO L130 PetriNetUnfolder]: For 49/54 co-relation queries the response was YES. [2022-04-18 16:33:54,468 INFO L84 FinitePrefix]: Finished finitePrefix Result has 808 conditions, 559 events. 75/559 cut-off events. For 49/54 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3010 event pairs, 23 based on Foata normal form. 0/516 useless extension candidates. Maximal degree in co-relation 733. Up to 81 conditions per place. [2022-04-18 16:33:54,471 INFO L132 encePairwiseOnDemand]: 190/193 looper letters, 11 selfloop transitions, 2 changer transitions 0/149 dead transitions. [2022-04-18 16:33:54,471 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 149 transitions, 371 flow [2022-04-18 16:33:54,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:54,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:54,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 527 transitions. [2022-04-18 16:33:54,474 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9101899827288429 [2022-04-18 16:33:54,474 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 527 transitions. [2022-04-18 16:33:54,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 527 transitions. [2022-04-18 16:33:54,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:54,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 527 transitions. [2022-04-18 16:33:54,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 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 16:33:54,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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 16:33:54,478 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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 16:33:54,478 INFO L186 Difference]: Start difference. First operand has 161 places, 148 transitions, 341 flow. Second operand 3 states and 527 transitions. [2022-04-18 16:33:54,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 149 transitions, 371 flow [2022-04-18 16:33:54,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 149 transitions, 367 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:54,482 INFO L242 Difference]: Finished difference. Result has 153 places, 147 transitions, 339 flow [2022-04-18 16:33:54,482 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=339, PETRI_PLACES=153, PETRI_TRANSITIONS=147} [2022-04-18 16:33:54,484 INFO L335 CegarLoopForPetriNet]: 174 programPoint places, -21 predicate places. [2022-04-18 16:33:54,484 INFO L478 AbstractCegarLoop]: Abstraction has has 153 places, 147 transitions, 339 flow [2022-04-18 16:33:54,485 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 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 16:33:54,485 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:54,485 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, 1, 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 16:33:54,485 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-18 16:33:54,486 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-04-18 16:33:54,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:54,486 INFO L85 PathProgramCache]: Analyzing trace with hash 175687448, now seen corresponding path program 1 times [2022-04-18 16:33:54,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:54,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705413662] [2022-04-18 16:33:54,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:54,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:54,607 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 16:33:54,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:54,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705413662] [2022-04-18 16:33:54,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705413662] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:54,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:54,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 16:33:54,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394260018] [2022-04-18 16:33:54,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:54,608 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 16:33:54,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:54,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 16:33:54,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 16:33:54,610 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 193 [2022-04-18 16:33:54,611 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 147 transitions, 339 flow. Second operand has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 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 16:33:54,611 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:54,612 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 193 [2022-04-18 16:33:54,612 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:54,678 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([467] L57-2-->L57-3: Formula: (= |v_#race~b~0_4| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_4|} AuxVars[] AssignedVars[#race~b~0][97], [253#true, Black: 220#true, 227#(= |#race~b~0| 0), 181#L49-1true, Black: 225#true, Black: 211#true, 257#true, 213#(= |#race~a~0| 0), 102#L74-4true, 43#L57-3true, 176#L41-1true, 222#(= |#race~c~0| 0)]) [2022-04-18 16:33:54,679 INFO L384 tUnfolder$Statistics]: this new event has 80 ancestors and is cut-off event [2022-04-18 16:33:54,679 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-04-18 16:33:54,679 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-04-18 16:33:54,679 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-04-18 16:33:54,711 INFO L129 PetriNetUnfolder]: 44/402 cut-off events. [2022-04-18 16:33:54,711 INFO L130 PetriNetUnfolder]: For 1/9 co-relation queries the response was YES. [2022-04-18 16:33:54,715 INFO L84 FinitePrefix]: Finished finitePrefix Result has 555 conditions, 402 events. 44/402 cut-off events. For 1/9 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1854 event pairs, 5 based on Foata normal form. 0/373 useless extension candidates. Maximal degree in co-relation 473. Up to 31 conditions per place. [2022-04-18 16:33:54,717 INFO L132 encePairwiseOnDemand]: 188/193 looper letters, 21 selfloop transitions, 4 changer transitions 0/146 dead transitions. [2022-04-18 16:33:54,717 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 146 transitions, 387 flow [2022-04-18 16:33:54,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 16:33:54,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 16:33:54,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 974 transitions. [2022-04-18 16:33:54,720 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8411053540587219 [2022-04-18 16:33:54,720 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 974 transitions. [2022-04-18 16:33:54,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 974 transitions. [2022-04-18 16:33:54,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:54,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 974 transitions. [2022-04-18 16:33:54,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 162.33333333333334) internal successors, (974), 6 states have internal predecessors, (974), 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 16:33:54,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 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 16:33:54,726 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 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 16:33:54,726 INFO L186 Difference]: Start difference. First operand has 153 places, 147 transitions, 339 flow. Second operand 6 states and 974 transitions. [2022-04-18 16:33:54,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 146 transitions, 387 flow [2022-04-18 16:33:54,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 146 transitions, 383 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:54,730 INFO L242 Difference]: Finished difference. Result has 155 places, 146 transitions, 341 flow [2022-04-18 16:33:54,731 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=341, PETRI_PLACES=155, PETRI_TRANSITIONS=146} [2022-04-18 16:33:54,732 INFO L335 CegarLoopForPetriNet]: 174 programPoint places, -19 predicate places. [2022-04-18 16:33:54,732 INFO L478 AbstractCegarLoop]: Abstraction has has 155 places, 146 transitions, 341 flow [2022-04-18 16:33:54,733 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 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 16:33:54,733 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:54,733 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:54,733 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-18 16:33:54,733 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-04-18 16:33:54,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:54,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1173727765, now seen corresponding path program 1 times [2022-04-18 16:33:54,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:54,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099746362] [2022-04-18 16:33:54,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:54,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:54,850 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 16:33:54,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:54,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099746362] [2022-04-18 16:33:54,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099746362] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:54,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:54,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 16:33:54,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538841008] [2022-04-18 16:33:54,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:54,851 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 16:33:54,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:54,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 16:33:54,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 16:33:54,853 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 193 [2022-04-18 16:33:54,854 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 146 transitions, 341 flow. Second operand has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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 16:33:54,854 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:54,854 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 193 [2022-04-18 16:33:54,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:54,925 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([467] L57-2-->L57-3: Formula: (= |v_#race~b~0_4| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_4|} AuxVars[] AssignedVars[#race~b~0][97], [Black: 220#true, 227#(= |#race~b~0| 0), Black: 225#true, 181#L49-1true, Black: 211#true, 257#true, 213#(= |#race~a~0| 0), 102#L74-4true, 43#L57-3true, 176#L41-1true, 264#true, 222#(= |#race~c~0| 0)]) [2022-04-18 16:33:54,926 INFO L384 tUnfolder$Statistics]: this new event has 80 ancestors and is cut-off event [2022-04-18 16:33:54,926 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-04-18 16:33:54,926 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-04-18 16:33:54,926 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-04-18 16:33:54,947 INFO L129 PetriNetUnfolder]: 44/400 cut-off events. [2022-04-18 16:33:54,947 INFO L130 PetriNetUnfolder]: For 3/11 co-relation queries the response was YES. [2022-04-18 16:33:54,950 INFO L84 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 400 events. 44/400 cut-off events. For 3/11 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1840 event pairs, 5 based on Foata normal form. 0/373 useless extension candidates. Maximal degree in co-relation 479. Up to 31 conditions per place. [2022-04-18 16:33:54,950 INFO L132 encePairwiseOnDemand]: 188/193 looper letters, 0 selfloop transitions, 0 changer transitions 145/145 dead transitions. [2022-04-18 16:33:54,950 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 145 transitions, 387 flow [2022-04-18 16:33:54,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 16:33:54,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 16:33:54,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 973 transitions. [2022-04-18 16:33:54,953 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8402417962003454 [2022-04-18 16:33:54,953 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 973 transitions. [2022-04-18 16:33:54,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 973 transitions. [2022-04-18 16:33:54,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:54,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 973 transitions. [2022-04-18 16:33:54,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 162.16666666666666) internal successors, (973), 6 states have internal predecessors, (973), 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 16:33:54,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 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 16:33:54,959 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 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 16:33:54,959 INFO L186 Difference]: Start difference. First operand has 155 places, 146 transitions, 341 flow. Second operand 6 states and 973 transitions. [2022-04-18 16:33:54,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 145 transitions, 387 flow [2022-04-18 16:33:54,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 145 transitions, 380 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-04-18 16:33:54,961 INFO L242 Difference]: Finished difference. Result has 155 places, 0 transitions, 0 flow [2022-04-18 16:33:54,961 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=155, PETRI_TRANSITIONS=0} [2022-04-18 16:33:54,962 INFO L335 CegarLoopForPetriNet]: 174 programPoint places, -19 predicate places. [2022-04-18 16:33:54,962 INFO L478 AbstractCegarLoop]: Abstraction has has 155 places, 0 transitions, 0 flow [2022-04-18 16:33:54,962 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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 16:33:54,965 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (37 of 38 remaining) [2022-04-18 16:33:54,965 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (36 of 38 remaining) [2022-04-18 16:33:54,965 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (35 of 38 remaining) [2022-04-18 16:33:54,966 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONDATA_RACE (34 of 38 remaining) [2022-04-18 16:33:54,966 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (33 of 38 remaining) [2022-04-18 16:33:54,966 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (32 of 38 remaining) [2022-04-18 16:33:54,966 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (31 of 38 remaining) [2022-04-18 16:33:54,966 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONDATA_RACE (30 of 38 remaining) [2022-04-18 16:33:54,966 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONDATA_RACE (29 of 38 remaining) [2022-04-18 16:33:54,967 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONDATA_RACE (28 of 38 remaining) [2022-04-18 16:33:54,967 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONDATA_RACE (27 of 38 remaining) [2022-04-18 16:33:54,967 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONDATA_RACE (26 of 38 remaining) [2022-04-18 16:33:54,967 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONDATA_RACE (25 of 38 remaining) [2022-04-18 16:33:54,967 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (24 of 38 remaining) [2022-04-18 16:33:54,967 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (23 of 38 remaining) [2022-04-18 16:33:54,968 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (22 of 38 remaining) [2022-04-18 16:33:54,968 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (21 of 38 remaining) [2022-04-18 16:33:54,968 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (20 of 38 remaining) [2022-04-18 16:33:54,968 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (19 of 38 remaining) [2022-04-18 16:33:54,968 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (18 of 38 remaining) [2022-04-18 16:33:54,968 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (17 of 38 remaining) [2022-04-18 16:33:54,969 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (16 of 38 remaining) [2022-04-18 16:33:54,969 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 38 remaining) [2022-04-18 16:33:54,969 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 38 remaining) [2022-04-18 16:33:54,969 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 38 remaining) [2022-04-18 16:33:54,969 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (12 of 38 remaining) [2022-04-18 16:33:54,969 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (11 of 38 remaining) [2022-04-18 16:33:54,970 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (10 of 38 remaining) [2022-04-18 16:33:54,970 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONDATA_RACE (9 of 38 remaining) [2022-04-18 16:33:54,970 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (8 of 38 remaining) [2022-04-18 16:33:54,970 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (7 of 38 remaining) [2022-04-18 16:33:54,970 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (6 of 38 remaining) [2022-04-18 16:33:54,970 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONDATA_RACE (5 of 38 remaining) [2022-04-18 16:33:54,971 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONDATA_RACE (4 of 38 remaining) [2022-04-18 16:33:54,971 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONDATA_RACE (3 of 38 remaining) [2022-04-18 16:33:54,971 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONDATA_RACE (2 of 38 remaining) [2022-04-18 16:33:54,971 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONDATA_RACE (1 of 38 remaining) [2022-04-18 16:33:54,971 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONDATA_RACE (0 of 38 remaining) [2022-04-18 16:33:54,971 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-18 16:33:54,975 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:33:54,979 INFO L227 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-04-18 16:33:54,980 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-18 16:33:54,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 04:33:54 BasicIcfg [2022-04-18 16:33:54,983 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-18 16:33:54,983 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-04-18 16:33:54,983 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-04-18 16:33:54,984 INFO L275 PluginConnector]: Witness Printer initialized [2022-04-18 16:33:54,984 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:33:51" (3/4) ... [2022-04-18 16:33:54,986 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-04-18 16:33:54,991 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-04-18 16:33:54,992 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-04-18 16:33:54,992 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-04-18 16:33:54,996 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-04-18 16:33:54,996 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-04-18 16:33:54,996 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-04-18 16:33:54,996 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-04-18 16:33:55,025 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-04-18 16:33:55,026 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-04-18 16:33:55,026 INFO L158 Benchmark]: Toolchain (without parser) took 4534.38ms. Allocated memory was 102.8MB in the beginning and 157.3MB in the end (delta: 54.5MB). Free memory was 67.8MB in the beginning and 106.2MB in the end (delta: -38.4MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. [2022-04-18 16:33:55,026 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 79.7MB. Free memory was 48.9MB in the beginning and 48.9MB in the end (delta: 23.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 16:33:55,027 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.72ms. Allocated memory is still 102.8MB. Free memory was 67.6MB in the beginning and 77.3MB in the end (delta: -9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-04-18 16:33:55,027 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.93ms. Allocated memory is still 102.8MB. Free memory was 77.3MB in the beginning and 75.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 16:33:55,027 INFO L158 Benchmark]: Boogie Preprocessor took 25.92ms. Allocated memory is still 102.8MB. Free memory was 75.2MB in the beginning and 73.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 16:33:55,028 INFO L158 Benchmark]: RCFGBuilder took 460.41ms. Allocated memory is still 102.8MB. Free memory was 73.7MB in the beginning and 58.0MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-04-18 16:33:55,028 INFO L158 Benchmark]: TraceAbstraction took 3709.14ms. Allocated memory was 102.8MB in the beginning and 157.3MB in the end (delta: 54.5MB). Free memory was 57.3MB in the beginning and 109.3MB in the end (delta: -52.0MB). Peak memory consumption was 82.2MB. Max. memory is 16.1GB. [2022-04-18 16:33:55,028 INFO L158 Benchmark]: Witness Printer took 42.44ms. Allocated memory is still 157.3MB. Free memory was 109.3MB in the beginning and 106.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-04-18 16:33:55,030 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 79.7MB. Free memory was 48.9MB in the beginning and 48.9MB in the end (delta: 23.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 256.72ms. Allocated memory is still 102.8MB. Free memory was 67.6MB in the beginning and 77.3MB in the end (delta: -9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.93ms. Allocated memory is still 102.8MB. Free memory was 77.3MB in the beginning and 75.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.92ms. Allocated memory is still 102.8MB. Free memory was 75.2MB in the beginning and 73.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 460.41ms. Allocated memory is still 102.8MB. Free memory was 73.7MB in the beginning and 58.0MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3709.14ms. Allocated memory was 102.8MB in the beginning and 157.3MB in the end (delta: 54.5MB). Free memory was 57.3MB in the beginning and 109.3MB in the end (delta: -52.0MB). Peak memory consumption was 82.2MB. Max. memory is 16.1GB. * Witness Printer took 42.44ms. Allocated memory is still 157.3MB. Free memory was 109.3MB in the beginning and 106.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 41]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 42]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 42]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 42]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 49]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 50]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 50]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 50]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 57]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 57]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 58]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 58]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 58]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 68]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 69]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 70]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 75]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 76]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 77]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 79]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 79]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 79]: there are no data races For all program executions holds that there are no data races at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 262 locations, 38 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.6s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 62 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 62 mSDsluCounter, 117 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 87 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 372 IncrementalHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 117 mSDtfsCounter, 372 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=367occurred in iteration=8, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 825 NumberOfCodeBlocks, 825 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 810 ConstructedInterpolants, 0 QuantifiedInterpolants, 1077 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 22 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-04-18 16:33:55,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE